In this talk, Yoav Meyrav outlines several ways in which Hebrew manuscripts function as mediators of Arabic philosophy: from the most general level of preserving texts lost in Arabic, to the most specific level of what can happen to a certain word written in a certain way in a certain manuscript. Sometimes, evidence in Hebrew problematises something that seems uniform if only Arabic materials are considered, and sometimes, events within the Hebrew tradition manufacture pseudo-problems with the text. All this amounts to argumentative fragility on the one hand, and the enriching of a unified tradition on the other.